I've done some work in the past with hooking up Hall Effect sensors, e.g. OH090U up to an Arduino. Please note, I do have limited electronics knowledge.

What I would like to know is if it is possible to wire up multiple OH090U components to increase the coverage of detecting a magnetic field over a larger area. Is there a way to tie the digital output across multiple sensors, so that if one or many sensors trigger it just sends one digital output?


1 Answer 1


Probably you could use one of these CD4072BM96 (OR gate), this is logic OR gate. Output will give you one digital high output if any of the inputs is high.

  • \$\begingroup\$ You forgot to add the link. \$\endgroup\$
    – Transistor
    Commented Mar 17, 2016 at 8:50
  • \$\begingroup\$ Excellent. Thank you, I've just ordered so OR gates for me to test with. \$\endgroup\$
    – Dave
    Commented Mar 20, 2016 at 15:46

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